Headless architecture is a modern approach to building websites that separates the front-end presentation layer from the back-end content management system. This means that the website's content can be managed separately from the way it's presented to the user.
In a headless architecture, the frontend and backend communicate through APIs (Application Programming Interfaces) or other types of integration methods. In ecommerce, this means the website or application's presentation layer is separated from the content management system (CMS). Instead of using a monolithic CMS, a headless CMS provides only the backend content management capabilities, while the frontend is built using a separate framework or technology.